check-versions: remove hg hack

It was only needed for hg-git tests.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

tools/check-versions

@@ -203,10 +203,6 @@ def add_component(id, url, **args)
 end
 
 hg_checkout_fix = lambda do |version|
-  if check_version(version, '5.7')
-    run_cmd %W[hg import -q --no-commit #{__dir__}/hg_revert_5.7.patch]
-  end
-
   FileUtils.cp('hg', "#{$builddir}/bin/")
 
   return if check_version(version, '4.3')

tools/hg_revert_5.7.patch

@@ -1,24 +0,0 @@
-diff --git a/hg b/hg
-index 4ec2b6140b..a3e61ad39c 100755
---- a/hg
-+++ b/hg
-@@ -1,4 +1,4 @@
--#!/usr/bin/env python3
-+#!/usr/bin/env python
- #
- # mercurial - scalable distributed SCM
- #
-diff --git a/mercurial/hg.py b/mercurial/hg.py
-index 1a7a281e30..bf75f15ac1 100644
---- a/mercurial/hg.py
-+++ b/mercurial/hg.py
-@@ -1013,7 +1013,7 @@ def clone(
-                                 pass
-                 if uprev is None:
-                     try:
--                        if destrepo._activebookmark:
-+                        if False:
-                             uprev = destrepo.lookup(destrepo._activebookmark)
-                             update = destrepo._activebookmark
-                         else:
-